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Resources / Mods / ModernFix-mVUS

ModernFix-mVUS

A fork of ModernFix that adds minor version update support.

ModsFree1.21 – 26.x
by Coredex · listed from Modrinth
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Direct download from Modrinth · 11,741,728 downloads

What it does

ModernFix-mVUS is a mod made by Coredex. A fork of ModernFix that adds minor version update support.

It supports Minecraft 1.21 – 26.x. It has been downloaded 11,741,728 times on Modrinth. The last update came out on Oct 13, 2026.

Supported versions

26.x1.21

Release history

ModernFix-mVUS has had 72 releases on Modrinth since Oct 18, 2025. 52 of them came out in the past year. The newest is 5.27.23+mc26.3, released on Oct 13, 2026. It is made for Minecraft 26.3. It runs on NeoForge. The download is 479 KB.

VersionReleasedMinecraftType
5.27.23+mc26.3Oct 13, 202626.3Release
5.27.20-build.2Sep 30, 2026–Beta
5.26.3-build.2Sep 28, 20261.21.11Release
5.20.6Sep 28, 20261.21.10Release
5.20.6Sep 28, 20261.21.10Release

Latest release on GitHub

ModernFix-mVUS is open source. Its newest release on GitHub is 5.27.18+26.2, published on Jun 19, 2026.

5.27.18 - commit.1

Before that: 5.27.17+26.2 (Jun 18, 2026), 5.27.17+26.1 (Jun 18, 2026).

Description from the author on Modrinth

ModernFix-mVUS is a fork of ModernFix that will release Modernfix versions for any version that is not supported by the official mod.
When the official mod updates to a specific minecraft version this fork will skip releasing that version.

Original ModernFix will no longer release Fabric builds so mVUS will only support Fabric for versions that get a NeoForge release on the original mod page.

The donation and server host links still point to the official creator's pages.

ModernFix is an all-in-one mod that improves performance, reduces memory usage, and fixes many bugs in modern Minecraft versions (most versions including and above 1.16 are supported) without majorly compromising the game experience. Most Forge 1.16-1.19.2 modpacks will launch roughly twice as fast with ModernFix installed. If some non-default options are enabled, it can even allow large modpacks like All The Mods 8 to run with 3GB or less of allocated memory.

ModernFix is free, open-source software. All of the code is available on the GitHub repository.

⚙️ Technical summary

What exactly does ModernFix do for your game? There are a lot of tweaks being made - too many to summarize here. However, here is a brief summary of the general types of improvements being made:

Backports of bugfixes from newer versions of Minecraft and/or Forge, e.g. fixing worlds breaking when you remove a dimension mod in 1.18.
Patches to mods that are no longer supported on a given Minecraft version, to improve the gameplay experience instead of requiring players to update.
Many optimizations & improvements to the game's launch process to significantly improve speed and reduce random concurrency crashes.
Additional debug tools to help modders and players determine the cause of some rare game crashes/freezes, instead of relying on a painful mod bisection process.
It's not enabled by default due to compatibility issues, but ModernFix includes functionality to completely redesign the game's model loading system, replacing it with a new, dynamic version that loads models on the fly. Model loading is one of the major performance regressions to modded Minecraft that has been present since 1.8, and this new system alleviates nearly all of the downsides, bringing memory usage and loading times more in line with how they were in 1.7.10.
Need to play the vanilla game with very little RAM allocated (e.g. 512MB or less)? Now you can do that. Head to the "Ultra-Low Memory Footprint" page on the wiki.

If you are technically savvy and looking for more details on each patch, I recommend reading the Summary of Patches wiki page.

🐛 Where to go when something doesn't work

Please report an issue on GitHub. Be sure to mention the Minecraft version, modloader, and ModernFix version you are using, as well as what other mods you have installed.

🎁 How can I support this project?

There are two main ways you can help support the development of ModernFix:

Spread the word! Test ModernFix in modpacks and encourage them to include it.
If you feel generous, I do accept donations via Ko-fi. Donating is not required (as ModernFix is free), but every little bit helps. I work on ModernFix in my spare time, so any compensation I receive helps to sustain development.
❓ What other mods should I use?

There are many performance mods available for Minecraft and I can't list them all here, but here are some essential mods, in my opinion:

On any version before 1.19.4 you should always have LazyDFU installed, as it eliminates the incredible lag caused by the DFU system.
On any version before 1.20 you should generally use Starlight unless it has a compatibility issue with your mods (which is quite rare). It offers vastly improved lighting performance and can also fix FPS stutters when moving between chunks.
Always have FerriteCore installed, as Mojang's implementation of blockstates/models is laughably inefficient, and quickly consumes RAM as soon as more content is added beyond what vanilla offers.
Install a mod like Shutup Experimental settings (before 1.19) or Yeetus Experimentus (1.19+). These mods will suppress the pop-up screen about experimental game features, which otherwise causes the game to reload its resources twice.

On a related note: I do not recommend use of OptiFine in any modded scenario. It is closed-source, patches the game in a way that easily breaks Forge and other mods, and significantly slows down game launching, often on the order of minutes. Please consider using Sodium (on Fabric) or Embeddium (on Forge) instead. Using OptiFine with ModernFix is not officially supported, and may cause issues.

Need a Minecraft server? Consider CreeperHost!

Written by Coredex. Read it with pictures on Modrinth.

How to install ModernFix-mVUS

  1. This mod runs only on your own game. Servers do not need it, so you can use it on any server.

  2. Install Fabric and NeoForge for Minecraft 1.21 – 26.x.

  3. Download the .jar file from Modrinth and put it in the mods folder of your .minecraft directory.

  4. Start Minecraft with the Fabric profile.

  5. Easier: in Prism Launcher or the Modrinth App, search for ModernFix-mVUS in your instance's mods and click Install. It adds the loader and the mods it needs for you.

Full guide: How to install Minecraft mods

Compatibility

Minecraft versions
26.x, 1.21
Runs on
Fabric, NeoForge
Where it runs
Client only (your game)
Edition
Java
Needs
Nothing else
License
GPL
Price
Free
Upkeep
Actively updated (Nov 11, 2026)

ModernFix-mVUS compared with similar ones Compare all alternatives

ResourceDownloadsVersionsLast updatePrice
ModernFix-mVUSthe one you looked at11.7M1.21 – 26.x28 days agoFree
Sodium ExtraFlashyReese106.4M1.16 – 26.x2 days agoFree
ModernFixembeddedt83.9M1.16 – 26.x19 hours agoFree
LambDynamicLightsLambdAurora63.6M1.16 – 26.xSep 15, 2026Free

Questions

Does ModernFix-mVUS work on Minecraft 26.x?

Yes. ModernFix-mVUS supports Minecraft 26.x. All supported versions: 26.x, 1.21.

Is ModernFix-mVUS free?

Yes. ModernFix-mVUS is free to download from Modrinth.

Is ModernFix-mVUS client-side or server-side?

Client-side. ModernFix-mVUS goes in your own mods folder and works on any server, including servers without mods.

Is ModernFix-mVUS still updated?

Yes. The last update came out in the past day.

What are the best alternatives to ModernFix-mVUS?

The closest ones are Sodium Extra, ModernFix and LambDynamicLights. Compare all alternatives

Alternatives to ModernFix-mVUS

ModernFixMods · 1.16 – 26.x

All-in-one mod that improves performance, reduces memory usage, and fixes many bugs. Compatible with all your favorite performance mods!

Free83,884,742 downloads
Compare all alternatives ›

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